2019-2020年中考英語專題復習 數(shù)詞 英語數(shù)詞表示數(shù)目或者順序， 可分為基數(shù)詞和序數(shù)詞?；鶖?shù)詞表示數(shù)量，序數(shù)詞表示順序。知識梳理：提綱挈領，抓住重點和難點！ 一、基數(shù)詞的構成 1112的基數(shù)詞是獨立的單詞，即： one，two，three，four，five，six，seven，eight， nine，ten，eleven，twelve。 21319的基數(shù)詞以-teen結尾。如： fourteen，seventeen等，但13，15，18較特殊， 13thirteen 15fifteen 18eighteen。 32090的整十位均以-ty結尾。如： sixty，ninety，但20，30，40，50，80較特殊， 20twenty 30thirty 40forty 50fifty 80eighty。 4十位數(shù)與個位數(shù)之間要加連字符號“-”，如：28twenty-eight，96ninety-six。 5百位和十位（若無十位則和個位）之間加and，如：148one hundred and forty-eight 406four hundred and six。 6hundred（百），thousand（千），million（百萬），billion（十億）等前面即使有具體的數(shù)詞，也不能在它們的后面加s。如：600six hundred，8百萬eight million。 71000以上的數(shù)字，從后往前數(shù)每三位加一個逗號“，”第一個逗號前為千（thousand），第二個逗號前為百萬（million），第三個逗號前為billion（十億）。英語中無“萬”這個詞，我們可以用“幾十個千（thousand）”表示幾萬，“幾百個千（thousand）”表示“幾十萬”。如：2，510two thousand five hundred and ten；84，296eight-four thousand two hundred and ninety-six；274，350two hundred and seventy-four thousand three hundred and fifty。 二、序數(shù)詞的構成序數(shù)詞一般是以與之相應的基數(shù)詞尾加-th構成，例如 fourth, tenth,但以下的這些基數(shù)詞變?yōu)樾驍?shù)詞時， 有特別之處。1.one- first, two - second, three - third, five - fifth, nice - ninth, twelve - twelfth 2. 以ty 結尾的單詞， 要先變y為I, 在加-eth. 例如：thirty -thirtieth, fifty -fiftieth3. 以one, two, three 等結尾的多位數(shù)詞， 要將各位數(shù)變成序數(shù)詞。 例如： twenty-one - twenty-first, one hundred and one - one hundred and first 注意： 序數(shù)詞前常用定冠詞， 有時還可以用不定冠詞 a/an 則表示 “又一 ”的意思。 例如：Mr Brown has a second car. 布朗先生另外還有一輛車。He has tried a second time. 他又嘗試了一次。三、數(shù)詞的應用 1時刻的表示：小時、點鐘、分鐘、秒鐘要用基數(shù)詞。 “幾點鐘”用基數(shù)詞加oclock。oclock可省略。如： 5點鐘five（oclock） “幾點過幾分 ”，30分鐘”用介詞past。如： 7：05five past seven；7：15fifteen （a quarter）past seven；7：30half past seven。 “差幾分幾點”用介詞“to”。如：7：40twenty to eight；7：45fifteen（a quarter to eight。 日常生活中的時間讀法常常簡化，直接按基數(shù)詞的順序讀。如：7：05seven o five；7：15 seven fifteen。 2年月日的表示： 年份用基數(shù)詞，如：xx年nineteen ninety-nine； 1900年nineteen hundred； xxtwo thousand；1905nineteen o five； 年用基數(shù)詞，日用序數(shù)詞。如：xx年6月8日 寫作：June 8，xx；讀作：June the eighth， nineteen ninety-eight或the eighth of June， nineteen ninety-eight。3. 世紀、年代表示法： （在）90年代 (in) the nineties （在）19世紀 (in) the nineteenth century （在）18世紀30年代 (in) 1730s或1730s4編號的表示： Lesson One the first lesson第一課； Bus No3the No3bus 3路公共汽車； 表示住所時不用“No”如：302房間Room 302（讀作：room three o two）； 如果編號的數(shù)詞比較長，一般用基數(shù)詞。如：Page 457第457頁； 電話號碼，用基數(shù)詞,如：3855633three eight five five（double five） six three three（double three）。 5分數(shù)的表達：分子用基數(shù)詞，分母用序數(shù)詞，分子大于“1”，分母則加“s”。如：13 one third，23two thirds； 另外：12 a（one）half; 14one fourth或a（one）quarter;34threefourths或three quarters。 half a second; a quarter of a second四分之一秒 6. 表示有小數(shù)的詞用基數(shù)詞。 5.5 five point five 12.135 twelve point one three five 7表示百分數(shù)5：five percent (per cent)， 0.8 zero point eight percent (per cent).8表示有小數(shù)的詞用基數(shù)詞。 5.5 five point five 12.135 twelve point one three five 9其他用法：1）基數(shù)詞單數(shù)名詞形容詞構成合成形容詞。如：一個五歲的男孩a five-year-old boy； 一座800米長的橋an 800-metre-long bridge；女子400米接力girls400-metre relay race。2）具體數(shù)詞metre（s）kilometre（s）kilo（s）long high tall deep away等。如：長江長6300公里。The Changjiang River is 6，300 kilometres long 3）表示"幾十歲"用序數(shù)詞，eg. 在他三十幾歲時 in his thirties4）倍數(shù)的表達：(一倍用once，兩倍用 twice，兩倍以上用基數(shù)詞times。如：5倍five times)。 例如：He is as tall a boy as I. He is a head taller than I . He is two years older than IChina is four times as large as Europe.I am twice as old as you. (=I am twice older than you. /I am twice the age of you.)My books are twice as many as yours.China is four times larger than Europe.(=China is four times the size of Europe.)I pay twice as much as it was worth.I pay twice as much for the house. 例題解析：舉一反三，學的更輕松！ 1. _ Chinese are looking for ways to learn English well before Beijing xx Olympic. A. Thousand B. Thousands C. Thousand of D. Thousands of 2. Both of the rules are broken. I want to buy a _ one. A. three B. third C. forth D. /3). - Which is the smallest number of the four? - _. A. Two- thirds B. A half C. A quarter D. Three-fourths4). Please write down the new words in the text of _. A. Lesson Eleven B. the Lesson Eleven C. Lesson Eleventh解析：1.基數(shù)詞hundred, thousand, million, billion 等前有具體數(shù)字時，它們后面不能加s,若這些詞后面有介詞of (幾百，成百上千) ，thousands of (幾千，數(shù)千個)，millions of, billions of 前不可用數(shù)詞修飾。但可用many, some, several 等修飾。故選答案D. 2答案： B。此題主要考查序數(shù)詞的運用。 3答案：C。此題主要考查英語中的分數(shù)表示法。英語中表示分數(shù)時，分母用序數(shù)詞，分子用基數(shù)詞，當分子大于1時，表示分母的序數(shù)詞后要加s. 4答案： A。 此題主要考查基數(shù)詞的編號。在通常情況下，名詞編號有這幾種表示法： 1。事物名詞+基數(shù)詞，且每個單詞的首字母都要大寫。如：Lesson Eleven；2。定冠詞+基數(shù)詞+事物名詞。如： No. 6 Middle School練習與鞏固：熟能生巧，取得好成績！選擇填空：1. _ of people in the world are sending information by E-mail ever day. A. Many million B. Several million C. Several millions D. Many millions2. About _ of the surface of the earth _ covered with water. A. three quarter, is B. three quarters, has C. three quarters, is D. three quarter, are 3. It will take _ time to finish the work. A. one and a half years B. a year and half C. one and a half years D. a year and halfs4- How long will your stay here ?、 -For _ . A. one and two days B. one and two day C. a day or two D. one or two day5When he moved to Germany in _ , he was already in _ . A. the fifties; his sixties B. fifties; his sixties C. the fifties; his sixty D. fifty; sixty6My brother lives in _ on _ floor. A. six Room ;second B. Room six ;the second C. Room six; two floor D. the room six ; the second7December is _ month of the year. A. twelve B. twelfth C. the twelfth D. the twelve8This took place in the _ . A. 1940 B. 1940s C. 1940es D. 1940th 9It is only _ from my home to the train station. A. ten minutes walk B. ten-minutes walk C. ten minutes s walk D. ten minutes walk10There are _ in this building , I live on _.A. nine floors ,the ninth floor B. nine floor, the ninth floorC. nine floor , nine floors D.ninth floor,the ninth floor 11The water behind the Three Gorges Dams (三峽大壩) should be _ higher than downstream（ 下游）。 A. sixty-five meter B. sixty-fifth meter C. sixty-five meters D. sixty-fifth meters12. There are _ days in a year. A. three hundred sixty-five B. three hundred and sixty-five C. three hundred and sixty five D. two hundreds and sixty-five13. -How many teachers are there in your school? - _. , but Im not sure. A. Hundreds B. Hundred C. Hundreds of D. One hundred14. There are _ doctors and nurses working hard in that hospital. A. thousand B. two thousand C. two thousands D. two thousands of15. - Whats one fourth and a half, do you know? - Yes, its _. A. two sixths B. three fourths C. one three D. three sixth16. Now children, turn to page _ and look at the _ picture in Lesson Two. A. twentieth, one B. twenty, one C. twentieth, first D. twenty, first17. Both of the two rulers are broken. I want to buy a _ one. A. three B. third C. forth D. /18. December is the _ month in year. A. twenty B. twelve C. twentieth D. twelfth19. - What is the date today? - Its _. A. Thursday B. June the sixteenth C. the best day D. June fifteen20. She knows a lot about China as she has been to China _. A. for the forth time B. four times C. a fourth time D. for four times 1-5 CCACA 6-10 BCBD 11-15 CCCDA 16 20 DBDBB